CN108872037A - Incipient fire feature checking test based on line holographic projections technology - Google Patents
Incipient fire feature checking test based on line holographic projections technology Download PDFInfo
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- CN108872037A CN108872037A CN201810799077.8A CN201810799077A CN108872037A CN 108872037 A CN108872037 A CN 108872037A CN 201810799077 A CN201810799077 A CN 201810799077A CN 108872037 A CN108872037 A CN 108872037A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000003595 mist Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005286 illumination Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001093 holography Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of incipient fire feature checking test based on line holographic projections technology, it include laser light source, pattern generator, spectroscope is provided on the emitting light path of laser light source, it is disposed with the first condenser, the first pin hole, collimation lens, sample heating box, microscope, beam splitter, CCD camera on spectroscopical transmitted light path, the first reflecting mirror, the second reflecting mirror, the second condenser, the second pin hole are successively arranged on spectroscopical reflected light path；The sample output of the pattern generator is connected to by pipeline with the inlet end of sample heating box, and the pipeline is equipped with air-heater, valve, and the signal output end of CCD camera is connected with PC machine.The present invention can accurately distinguish out smog, CO, SO2Etc. gas particles or water mist, realize fire early sign detection purpose.
Description
Technical field
The present invention relates to field of fire fighting equipment, and in particular to a kind of incipient fire feature detection based on line holographic projections technology
Experimental system.
Background technique
With the propulsion of all-round well-off society's process and the rapid development of national economy, either family or the environment of plant
Become to become increasingly complex, on the one hand, the misapplication of various electrical equipments or use for a long time are likely to cause fire；
On the other hand, more reasonably to utilize space, the closeness of cargo accumulation is increasing, easily initiation spontaneous combustion.China is every year all
Have and much play fire, causes a large amount of property loss and casualties, for better fire preventing, protect the people of people
Body property safety, researcher study various methods to detect the generation of fire to prevent trouble before it happens.Therefore, we also carry out
It is bold in innovation, digital microscopic holography technical application is identified into CO, SO in smog and smog to fire prevention detection2Equal gases
In the research of particle.Traditional fire detection device mostly uses greatly cigarette sensing type sensor, although such detection device has centainly
Detection accuracy, but precision is limited and sensitivity is not high, and cannot distinguish CO, SO in smog well2Etc. gas particles
And water mist.When having fire generation, cannot discovery accurately and timely just very likely result in serious loss, leading to can not estimate
The consequence of amount.Effective fire preventing occurs, and becomes more and more important in safeguarding people's lives and properties, the people and fire-fighting
Department increasingly payes attention to fire preventing, and the fire-fighting equipment for detecting fire, which just seems, to be even more important.Therefore, it is based on line holographic projections technology
Incipient fire feature checking test have important practical value and social effect.
Summary of the invention
The present invention is provided a kind of based on complete to avoid the problem that above-mentioned existing fire detector precision is limited, sensitivity
The incipient fire feature checking test of shadow casting technique is ceased, caused by overcoming traditional smog sensor accuracy, sensitivity low
The big problem of fire detector low efficiency, error.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：
Incipient fire feature checking test based on line holographic projections technology, it is characterised in that：Include laser light source,
Pattern generator is provided with spectroscope on the emitting light path of laser light source, is disposed with first on spectroscopical transmitted light path
Condenser, the first pin hole, collimation lens, sample heating box, the first microscope, beam splitter, CCD camera, spectroscopical reflected light
Road is successively arranged the first reflecting mirror, the second reflecting mirror, the second condenser, the second pin hole, the second microscope；The sample generates
The sample output of device is connected to by pipeline with the inlet end of sample heating box, and the pipeline is equipped with air-heater, valve, CCD
The signal output end of camera is connected with PC machine；The laser of the laser light source transmitting is divided into two-way collimated light by spectroscope, i.e.,
Target object light beam and reference beam, target object light beam optically focused at the first condenser control diffraction breadth by the first pin hole
And collimated by collimation lens and form extension light, the sample in the bright sample heating box of illumination is extended, sample is created to object after illuminating
Before bulk wave, collected before object wave by the first micro objective；Reference beam is successively through the first reflecting mirror and the second reflecting mirror by
Two condenser optically focused become to refer to wave surface with through the identical diffraction breadth of sample light through the second pin hole and the collection of the second microscope；
It is connect by beam splitter before object wave with reference wave surface and to form interference pattern and project in CCD camera, finally reach PC machine progress
Algorithm rebuilds identification.
The incipient fire feature checking test based on line holographic projections technology, it is characterised in that：The sample
It is smog, CO particle, SO2One of particle, water mist are a variety of.
The incipient fire feature checking test based on line holographic projections technology, it is characterised in that：The sample
The sample output of generator is first connect with a threeway by pipeline, and the another both ends of threeway pass through pipeline respectively and are connected to sample
The inlet, outlet end of heating box, air-heater, valve are mounted on the pipeline between threeway and sample heating box inlet end.Sample adds
Close valve when being full of sample in hot box, in whole process, sample heating box has been at heated condition, guarantees sample state.
In the present invention, to obtain optimal as a result, laser light source, spectroscope, sample heating box and microscope are having
Body is all adjustable in implementing.The present invention is controlled using laser light source, spectroscope, sample heating box and microscopical adjustability
Laser intensity processed, laser angle amplify precision and multiple, finally obtain the very low interference fringe of noise, rebuild relatively sharp essence
True sample graph distinguishes smog, CO, SO preferably to reach2Etc. gas particles and water mist purpose.
The beneficial effects of the present invention are：
The present invention detects smog, CO, SO in fire using line holographic projections technology2Etc. gas particles and water mist it is dense
Degree, reduces error in the mobility of design structure, compared with conventional fire detector, the present invention is either in essence as far as possible
Degree, or have very big advantage in sensitivity and realization.
Detailed description of the invention
Fig. 1 is light channel structure schematic diagram of the invention.
Figure label：1 laser light source, 2 spectroscopes, 3 target object light beams, 4 reference beams, 5 first condensers, 6 first
Before pin hole, 7 collimation lens, 8 sample heating box, 9 air-heaters, 10 pattern generators, 11 valves, 12 object waves, 13 microscopes, 14
Beam splitter, 15 CCD cameras, 16 PC machine, 17 first reflecting mirrors, 18 second reflecting mirrors, 19 second condensers, 20 second pin holes,
21 samples, 22 threeways, 23 second microscopes.
Specific embodiment
Referring to Fig. 1, in the present embodiment, the incipient fire feature checking test based on line holographic projections technology, feature
It is：Include laser light source 1, pattern generator 10, spectroscope 2, spectroscope 2 are provided on the emitting light path of laser light source 1
Transmitted light path on be disposed with the first condenser 5, the first pin hole 6, collimation lens 7, sample heating box 8, the first microscope
13, beam splitter 14, CCD camera 15 are successively arranged the first reflecting mirror 17, the second reflecting mirror 18, on the reflected light path of spectroscope 2
Two condensers 19, the second pin hole 20, the second microscope 23；The sample output of the pattern generator 10 passes through pipeline and sample
The inlet end of heating box 8 is connected to, and the pipeline is equipped with air-heater 9, valve 11, the signal output end and PC machine of CCD camera 15
16 are connected；The laser that the laser light source 1 emits is divided into two-way collimated light, i.e. target object light beam 3 and reference by spectroscope 2
Light beam 4, the optically focused at the first condenser 5 of target object light beam 3 control diffraction breadth by the first pin hole 6 and by 7 standard of collimation lens
Straight extends the sample 21 in the bright sample heating box 7 of illumination at extension light, and sample is created to 12 before object wave after illuminating, object
12 are collected by 13 object lens of the first microscope before bulk wave；Reference beam 4 is successively through the first reflecting mirror 17 and the second reflecting mirror 18 by
Two condensers, 19 optically focused, through the second pin hole 20 and the collection of the second microscope 23 become with through the identical diffraction breadth reference wave of sample light
Front；12 to form interference pattern and project in CCD camera 15 with connect with reference to wave surface by beam splitter 14 before object wave, final biography
Algorithm, which is carried out, to PC machine 16 rebuilds identification.
Sample 21 is smog, CO particle, SO2One of particle, water mist are a variety of.
The sample output of pattern generator 10 is first connect with a threeway 22 by pipeline, the another both ends difference of threeway 22
The inlet, outlet end of sample heating box 8 is connected to by pipeline, air-heater 9, valve 11 are mounted on threeway 22 and sample heating box 8
On pipeline between inlet end.Close valve 11 when being full of sample in sample heating box 8, in whole process, sample heating box 8 one
It is directly in heated condition, guarantees sample state.
Claims (3)
1. the incipient fire feature checking test based on line holographic projections technology, it is characterised in that：It include laser light source
(1), pattern generator (10) are provided with spectroscope (2) on the emitting light path of laser light source (1), the transmitted light path of spectroscope (2)
On be disposed with the first condenser (5), the first pin hole (6), collimation lens (7), sample heating box (8), the first microscope
(13), beam splitter (14), CCD camera (15) are successively arranged the first reflecting mirror (17), second on the reflected light path of spectroscope (2)
Reflecting mirror (18), the second condenser (19), the second pin hole (20), the second microscope (23)；The sample of the pattern generator (10)
This output end is connected to by pipeline with the inlet end of sample heating box (8), and the pipeline is equipped with air-heater (9), valve (11),
The signal output end of CCD camera (15) is connected with PC machine (16)；The laser of laser light source (1) transmitting passes through spectroscope (2)
It is divided into two-way collimated light, i.e. target object light beam (3) and reference beam (4), target object light beam (3) is in the first condenser (5)
Locate optically focused, control diffraction breadth by the first pin hole (6) and extension light is formed by collimation lens (7) collimation, extends the bright sample of illumination
The inner sample (21) of heating box (8), sample are created to before object wave (12) after illuminating, and (12) are by the first microscope before object wave
(13) object lens are collected；Reference beam (4) is successively through the first reflecting mirror (17) and the second reflecting mirror (18) by the second condenser (19)
Optically focused is collected through the second pin hole (20) and the second microscope (23) and is become and the reference wave battle array through the identical diffraction breadth of sample light
Face；(12) to form interference pattern and project in CCD camera (15) with being connect with reference to wave surface by beam splitter (14) before object wave, most
PC machine (16) are reached eventually carries out algorithm reconstruction identification.
2. the incipient fire feature checking test according to claim 1 based on line holographic projections technology, feature exist
In：The sample (21) is smog, CO particle, SO2One of particle, water mist are a variety of.
3. the incipient fire feature checking test according to claim 1 based on line holographic projections technology, feature exist
In：The sample output of the pattern generator (10) is first connect with a threeway (22) by pipeline, and another the two of threeway (22)
End is connected to the inlet, outlet end of sample heating box (8) by pipeline respectively, and air-heater (9), valve (11) are mounted on threeway (22)
On pipeline between sample heating box (8) inlet end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810799077.8A CN108872037A (en) | 2018-07-19 | 2018-07-19 | Incipient fire feature checking test based on line holographic projections technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810799077.8A CN108872037A (en) | 2018-07-19 | 2018-07-19 | Incipient fire feature checking test based on line holographic projections technology |
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| CN108872037A true CN108872037A (en) | 2018-11-23 |
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| CN201810799077.8A Pending CN108872037A (en) | 2018-07-19 | 2018-07-19 | Incipient fire feature checking test based on line holographic projections technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444004A (en) * | 2018-12-14 | 2019-03-08 | 西安理工大学 | Yb:YAG solid state laser self-mixed interference nano particle size sensor |
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|---|---|---|---|---|
| CN2516968Y (en) * | 2001-12-21 | 2002-10-16 | 中国科学技术大学 | Suction laser picture smoke identification fire detection device |
| US20090302235A1 (en) * | 2006-05-01 | 2009-12-10 | Fujirebio Inc. | Fluorescent non-metallic particles encapsulated in a metallic coating |
| CN102945586A (en) * | 2012-12-06 | 2013-02-27 | 中国科学技术大学 | Low-power consumption low-flow resistance smoke temperature gas composite fire detector |
| CN104792734A (en) * | 2015-03-10 | 2015-07-22 | 重庆理工大学 | Magnetorheological effect digital holographic observation device and method thereof |
| CN104897538A (en) * | 2015-06-16 | 2015-09-09 | 天津大学 | Construction site raising dust detecting device based on digital holography |
| CN105242512A (en) * | 2015-09-29 | 2016-01-13 | 南京理工大学 | Telecentric optical structure-based transmission-type digital holographic microscopic imaging device |
| CN108519311A (en) * | 2018-03-07 | 2018-09-11 | 广州博冠光电科技股份有限公司 | A kind of smoke particle density real-time detection apparatus and method |
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2018
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|---|---|---|---|---|
| CN2516968Y (en) * | 2001-12-21 | 2002-10-16 | 中国科学技术大学 | Suction laser picture smoke identification fire detection device |
| US20090302235A1 (en) * | 2006-05-01 | 2009-12-10 | Fujirebio Inc. | Fluorescent non-metallic particles encapsulated in a metallic coating |
| CN102945586A (en) * | 2012-12-06 | 2013-02-27 | 中国科学技术大学 | Low-power consumption low-flow resistance smoke temperature gas composite fire detector |
| CN104792734A (en) * | 2015-03-10 | 2015-07-22 | 重庆理工大学 | Magnetorheological effect digital holographic observation device and method thereof |
| CN104897538A (en) * | 2015-06-16 | 2015-09-09 | 天津大学 | Construction site raising dust detecting device based on digital holography |
| CN105242512A (en) * | 2015-09-29 | 2016-01-13 | 南京理工大学 | Telecentric optical structure-based transmission-type digital holographic microscopic imaging device |
| CN108519311A (en) * | 2018-03-07 | 2018-09-11 | 广州博冠光电科技股份有限公司 | A kind of smoke particle density real-time detection apparatus and method |
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|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444004A (en) * | 2018-12-14 | 2019-03-08 | 西安理工大学 | Yb:YAG solid state laser self-mixed interference nano particle size sensor |
| CN109444004B (en) * | 2018-12-14 | 2021-05-18 | 西安理工大学 | Yb-YAG solid laser self-mixing interference nano-grain size sensor |
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Application publication date: 20181123 |
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